ZW27-12 Outdoor Vacuum Circuit Breaker
Product Introduction
Overview:
ZW27-12 Outdoor Vacuum Circuit Breaker is an outdoor high-voltage switch equipment with a rated voltage of 12kV. It is an optimized product to replace oil-insulated vacuum circuit breakers and realize oil-free air composite insulation. The circuit breaker combines the advantages of the current domestic column vacuum circuit breaker, and its performance is ahead of similar domestic products. To better meet the needs of the power sector, it is the leading vacuum circuit breaker in this field in my country.
Common models:
ZW27-12/630A,ZW27-12/1000,ZW27-12/1250
Product Structure and Benefits：
The product consists of two parts: the circuit breaker body and the operating mechanism.
The body structure of the circuit breaker without disconnector consists of a conductive circuit, an insulating system, a seal and a casing.
The conductive loop is formed by connecting the incoming and outgoing wire conductive rods, the incoming and outgoing wires insulating support, the conductive clip, the soft connection and the vacuum interrupter.
The product is air-insulated.
The porcelain sleeve or outdoor epoxy resin or silicone rubber of imported material is used for inlet and outlet wire sleeve.
The shell is sealed, and the interior adopts composite insulation, which has the characteristics of anti-condensation, anti-pollution and weather resistance.
The circuit breaker can be equipped with an isolating switch to form an obvious visible fracture.
The potential transformers can be installed inside the switch to provide operating power and voltage sampling.
Environmental Conditions：
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The upper limit of ambient air temperature is +40°C, and the lower limit is -40°C;
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The altitude is not more than 2000m;
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The relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%;
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The wind pressure is not more than 700Pa;
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The wind speed should not exceed 34m/s;
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The degree of air pollution is grade IV according to"STAND-GB5582";
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The earthquake intensity does not exceed 8 degrees.
Specification
The main technical parameters of circuit breakers：
| No. | Item | Unit | Data | ||
| 1 | Rated Voltage | kV | 12 | ||
| 2 | Rated Insulation(1min power frequency withstand voltage) | kV | 42 | ||
| 3 | Rated Insulation(Rated lightning impulse withstand voltage) | kV | 75 | ||
| 4 | Rated Frequency | Hz | 52 | ||
| 5 | Rated Current | A | 50 | ||
| 6 | Rated Short-circuit Breaking Current | kA | 630 / 1000 / 1250 | ||
| 7 | Rated Short-circuit Current Breaking Times | t | 30 | ||
| 8 | Rated Sequence of Operations | / | O-0.3s-CO-180s-CO | ||
| 9 | The Rated Short-circuited Closed Current(Peak) | kA | 30 | ||
| 10 | The Rated Withstand Current | kA | 31.5 / 40 / 50 / 63 | ||
| 11 | Rated Short-trem Withstand Current | kA | 12.5 / 16 / 20 /25 | ||
| 12 | Rated Operating Voltage | V | AC 220 / DC 220 / DC48 /DC24 | ||
| 13 | Full Breaking time | s | ≤0.125 | ||
| 14 | Main Circuit Resistance for Each Phase | μΩ | ≤200 | ||
| 15 | Mechanical Lifetime | t | 10000 | ||
Prodect details
Product outline and installation dimensions：
(Unit:mm)
Company Profile
Shaanxi Huadian Electric Co., Ltd. A modern high-tech enterprise specializing in the production of vacuum circuit breakers integrating R&D, manufacturing and sales.
Production Workshop
Prodect qualification
Certifications
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